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fzus63 kmqt 161401
glfls 
expires:202506162000;;338800

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon jun 16 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

this morning, lake superior is situated between a 30.2 inch high 
over new england and a 29.8 inch low over the dakotas. this low 
deepens to 29.6 inches as it approaches the western arm of lake 
superior tonight. the low then further deepens to 29.4 inches over 
northeastern ontario tuesday afternoon and to 29.1 inches over 
northern quebec wednesday morning. throughout the day wednesday, a 
29.6 inch low will approach lake michigan from the southwest while 
lingering 29.7 inch troughing approaches lake superior from the 
northwest. these two features will merge into a 29.5 inch low over 
georgian bay thursday morning while a 30.0 inch high moves over 
northern ontario. weak 30.0 inch ridging then remains over lake 
superior through friday.



lsz162-162000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt mon jun 16 2025 /901 am cdt mon jun 16 2025/

.rest of today...east winds 5 to 15 knots backing northeast in
the afternoon. a chance of showers. a chance of thunderstorms by
mid afternoon. waves calm to 2 feet. 
.tonight...northeast winds 10 to 20 knots veering southwest after
midnight, then veering west late. showers with thunderstorms
likely through midnight, then a chance of showers and
thunderstorms after midnight. waves building to 2 to 4 feet. 
.tuesday...west winds 10 to 20 knots becoming southwest 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.tuesday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...south winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots becoming northwest
10 to 20 knots after midnight. a chance of showers. waves calm to
2 feet. 
.thursday...east winds 10 to 20 knots becoming northeast 5 to
15 knots. a chance of showers. waves calm to 2 feet. 
.friday...east winds 10 to 20 knots. a chance of showers, then
showers likely and a chance of thunderstorms. waves calm to
2 feet. 

$$
fzus63 kmqt 161401
glfls 
expires:202506162000;;338801

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon jun 16 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

this morning, lake superior is situated between a 30.2 inch high 
over new england and a 29.8 inch low over the dakotas. this low 
deepens to 29.6 inches as it approaches the western arm of lake 
superior tonight. the low then further deepens to 29.4 inches over 
northeastern ontario tuesday afternoon and to 29.1 inches over 
northern quebec wednesday morning. throughout the day wednesday, a 
29.6 inch low will approach lake michigan from the southwest while 
lingering 29.7 inch troughing approaches lake superior from the 
northwest. these two features will merge into a 29.5 inch low over 
georgian bay thursday morning while a 30.0 inch high moves over 
northern ontario. weak 30.0 inch ridging then remains over lake 
superior through friday.



lsz263-162000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1001 am edt mon jun 16 2025

.rest of today...south winds less than 10 knots becoming east
5 to 15 knots late. a chance of showers. a slight chance of
thunderstorms by mid afternoon. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots veering south after midnight,
then becoming southwest 10 to 20 knots late. showers likely
through midnight. a chance of thunderstorms. a chance of showers
after midnight. waves building to 2 to 4 feet. 
.tuesday...west winds 5 to 15 knots backing southwest late. a
slight chance of showers through early afternoon. waves subsiding
to 1 to 3 feet. 
.tuesday night...west winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots backing south by mid
afternoon. a slight chance of showers. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots veering northwest
after midnight. a chance of showers. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots veering south. a chance of
showers. waves calm to 2 feet. 
.friday...southeast winds 5 to 15 knots. a chance of showers,
then showers likely. waves calm to 2 feet. 

$$
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